Clobetasone Butyrate EP Impurity I CAS 639817-47-3

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.639817-47-3
Molecular FormulaC26H32ClFO5
Molecular Weight478.98 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Clobetasone Butyrate EP Impurity I CAS 639817-47-3 chemical structure

Description

CATO supplies Clobetasone Butyrate EP Impurity I (CAS 639817-47-3), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C26H32ClFO5. Molecular weight: 478.98 g/mol. Batch-specific COA and technical support are available on request.

Physical & Chemical Properties

Molecular FormulaC26H32ClFO5
Molecular Weight478.98 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity≥95%
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1985
Halogen ContentF/Cl-containing

Related Clobetasone Standards

Recommended Standards

Why CATO?